
Review for Test - Physical/Chemical Changes, Atoms, Elements & Compounds
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- Q1Which of the following is a chemical change?Chopping vegetablesDissolving sugar in waterBaking a cakeFreezing water60s
- Q2Which of the following is an example of a physical change?Rusting ironMelting iceCombustion of gasolineBurning wood60s
- Q3Which of the following is NOT a sign of a chemical change?Formation of a precipitateProduction of gasChange in size or shapeChange in color60s
- Q4Which process is an example of a physical change?Burning paperBreaking a glassRust forming on ironDigesting food60s
- Q5Which of the following is a characteristic of a physical change?It involves a color change that is permanentIt can often be reversed.It produces heatIt changes the chemical identity60s
- Q6What occurs during a chemical change?The substance changes only its stateThe substance maintains its original propertiesThe size of the substance changesThe original substances are transformed into different substances.60s
- Q7Which of the following describes a chemical change?The reaction of vinegar and baking soda produces carbon dioxide gas.Dissolving salt in waterMelting chocolateCutting paper60s
- Q8What type of change is fermentation of milk into cheese?Chemical changePhysical changePhase changeMechanical change60s
- Q9
Which of the following statements best compares the two images?
Image A is a compound because it has different types of atoms, and image B is an element because it has one type of atom.
Images A and B are both compounds because they have more than one atom.
Images A and B are both elements because they have more than one atom.
Image A is an element because it has one type of atom, and image B is a compound because it has different types of atoms.
60s - Q10
Aluminum fluoride is a compound commonly used in ceramics. The chemical formula for aluminum fluoride is AlF3. The Periodic Table shows the elements used in the compound. Which of the following is true regarding aluminum fluoride?
Aluminum fluoride contains 3 atoms of aluminum and 3 atoms of fluorine.
Aluminum fluoride contains 1 atom of aluminum and 3 atoms of fluorine.
Aluminum fluoride contains 3 atoms of aluminum and 1 atom of fluorine.
Aluminum fluoride contains 1 atom of aluminum and 1 atom of fluorine.
120s - Q11
Which of the following provides the number of atoms of an element?
Subscript
Chemical symbol
Coefficient
Capitals
60s - Q12
Which of the following chemical formulas contains the most total atoms?
H2O
NaHCO3
NaCl
Cl
120s - Q13
Which of the answers below would not be a chemical symbol of an element?
Mg
Zn
fe
Cl
60s - Q14
Which of the data tables correctly classifies the given substances?
60s